Concrete-column mold.



elaini.

HERMAN J. lEBERLE, OF ST. LOUIS, MISSOURI.

,CONCRETE-COLUMN' MOLD.

Specification olf Letters Patent.

Patented Jan. 24, 191.1.

Application filed May 12, 1910. VSerial No. 560,816.v

To all whom it may' concern:

Be. itl-known that l, llnnnax J. Eiannnn. a eitizenot the Unitedfrlta'tes, and resident ot St. Louis, Missouri, l'nweinrented `certainnew and useful nlinprov'enients in Cont-rete- Iolunin Molds, otjvhichthe following is f specification containing a tull, ele-ar, and

exact description, reference being had to the accompanying drawings,forming a part hereof.

My invention relates to an improved mold vfor concret-e. eolunins, andconsists in the novel construction and combinationof parts hereinafterdescribed and polnted out in the V The objeet of 4my invention is toprovide an iniproved mold for use in toi-nung concrete e'orlunins 1n thein'ost economical and etiicient'inanner, and which shall be simple.v

and durable in eonstrimtion and of low cost.

In the drawings, Figure l is a seetional elevation oit one section of myimproved inold. Fig, 2 is a plan-view ot' one of the splitcoupling-rings. Fig. 3 is a sectionaleleVati-on o' a series ot theiuoldse(^.tions, set up. Fig. l is a detail-section of the lowerport-ion ot the base-seetion.

The mold is made up of a series ot sheetinetal sections 1, having theirmeeting-edges temporarily secured together by means of rivets or boltsL), and removably mounted end-to-e1xd so that their seams will breakjoints split 'coupling-rings 3 preferably made of curved angle-barsL-shaped in crosssection and provided with pail-sof adjoininglholt-holes et' synnnetrirally-loeated in the vertical and horizontalflanges of said bars,

whereby said eouplingjrings may be'used interchangeably on the ends o'tsaid sheetnietal sections, and whereby the abutting ends of the saidrings will break joints l with those ot' the rings above and below themin the erected mold, as shown in F ig. 3. The semi-circular halves ofthe rings 3 are temporarily fastened to the ends of the sheet-metalsections l by means of bolts 5. Said bolts 5 are to be locatedtemporarily only Vin the holes through which they are passed in'thevertical flange of said split rings, and in the corresponding holesformed near the ends of the sheet-metal sections 1. Said holes in thesaid rings and in said sheet-metal sections 1 are arranged synmetrieally in said parts, so that all of the said rings and all ofb saidsheetlinetal see- 4 tions can be used interehangeably,` in breakingjoints during the erecting operation. In other words, there are pairs ofadjoining holes Jfor the bolts formed in the sheetinetal sectionsdiametricaily-opposite each other, and the pairs of holes 4 in saidhorizontalfianges ot' the rings are also diametrieally-opposite eachother. Said pairs of synnnetrieally-loeated holes in .the flanges ofsaid rings are furthermore syunnetrieallylocated at an angle of l5degrees apart in the preferred.arrangeinent, as shown, but ofcourse thelspace'between the said pairs of holes (both in said rings andcorrespondingly in the .sheet-metal sections) may be varied if desired,and the result will be praetieally identical in either ease. Addi tionalboltsholes for additional bolts 7 are' located interlnediitely of thesaid pairs of holes and bolts.

A. Cleaningrouthole SV is formed in the base of the base-section so thatpieces of wood, shavings &e., which may have accident-ally fallen intothe in old during theereetion of the necessary carpenter-work around anew building, can be readily removed from the completed inold just priorto pouring in the concrete. i

A detachable door S) covers said cleaningout opening during theoperation of pouring in the concrete. Said door 9 has its lowerportionloeated between the base ring 3 and the outerwall of thebase-section 1, and the lower portion ot said door is wider than saidopening and projects laterally beyond the edges of saine, so thaty thelower portion -ot said door cannot pass within said section; but theupper portion of said door is rut narrower than said lower portion, sothat a shoulder 10 is formed at the upper end of said lower port-ion ofsaid door, and a narrow portion 1l is formed above Said shoulder, andthe narrow portion is bent i11- wardly a slight distance (correspondingto the thickness of the sheet-metal section) and thence saidupper-portion is bent upwardly again.' so that it covers said openingal# though located upon the inside of said'section. j l

The operation is as follows: The door 9 may be detached by slidingitupwardly u-ntil its lower end is raised above the upper edge. of theadjacent ring 3, when the door -niay be readily drawn out of saidopening,

in' said mold. rlhe replacement of said door is obvious. Before pouringthe concrete the mold should be erected as shown in Fig. 3,-

with the edges of the sections l united by rivets 2; with the ends ofsaid sections abutting, but with. their seams arranged to break joints,and with the splitcoupling- 'rings at the ends of said sections alsoarranged so that the opposite joints in them break joints with eachother and With the seams of said sheet-metal sections. The rings of theabutting sections are bolted together temporarily by bolts passedthroughsaid paii's of holes 4 and through the holes located intermediate ofthem. The mold will then be ready for pouring in the con crete. Afterthe concrete has been allowed to set in the mold for a. suicicnt lengthof time, the coupling-rings are removed by detaching their bolt-nutswhich have secured them together at the abutting ends of the sections,and by also removing the nuts from the bolts which have secured them tosaid sheet-metal sections; afterwhich the workman should cut therivetsor bolts 2 when the sections may be readily openedseams ofadjacent sections arranged to break joints and said sections havingsymmetrically-located pairs of adjoining holes near the ends of saidsections, and a series of split coupling rings L-shaped in cross sectionand having also symmetricallylocated pairs' of adjoining holes formed inboth vertical and horizontal flanges and said rings mountedinterchangeably on the ends of `,aid sections With the joints in saidrings breaking joints With the joints of the other split coupling ringsand with the joints of said sections, substantially as shown anddescribed.

In testimony whereof, I have signed my name to this specification, inpresence of two subscribing Witnesses.`

HERMAN J. EBERLE. Witnesses:

E. E. LoNGAN, E. L. AVVALLAon

